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Posted to solr-user@lucene.apache.org by Markus Jelsma <ma...@openindex.io> on 2015/06/22 12:06:39 UTC
Loading custom codec and SPI problem
Hi - i've created a small Maven project with just a custom Lucene 4.3 codec. It is a basic MyCodec extends FilterCodec implementation, disabling compression. I have added the FQCN to the src/main/resources/META-INF/services/org.apache.lucene.codecs.Codec. I have checked the jar itself to see if the file is actually there, it is. However, i cannot load the codec, although the jar is actually loaded. When configuring it in solrconfig.xml as CodecFactory, i get
org.apache.solr.common.SolrException: class org.example.MyCodec
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:822)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:618)
at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:949)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:984)
at org.apache.solr.core.CoreContainer$2.call(CoreContainer.java:597)
at org.apache.solr.core.CoreContainer$2.call(CoreContainer.java:592)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: class org.example.MyCodec
at java.lang.Class.asSubclass(Class.java:3397)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:448)
at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:486)
at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:482)
at org.apache.solr.core.SolrCore.initCodec(SolrCore.java:847)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:734)
... 11 more
3144 [coreLoadExecutor-3-thread-1] ERROR org.apache.solr.core.CoreContainer – null:org.apache.solr.common.SolrException: Unable to create core: collection1
at org.apache.solr.core.CoreContainer.recordAndThrow(CoreContainer.java:1450)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:993)
at org.apache.solr.core.CoreContainer$2.call(CoreContainer.java:597)
at org.apache.solr.core.CoreContainer$2.call(CoreContainer.java:592)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.solr.common.SolrException: class org.example.MyCodec
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:822)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:618)
at org.apache.solr.core.CoreContainer.createFromLocal(CoreContainer.java:949)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:984)
... 8 more
Caused by: java.lang.ClassCastException: class org.example.MyCodec
at java.lang.Class.asSubclass(Class.java:3397)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:448)
at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:486)
at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:482)
at org.apache.solr.core.SolrCore.initCodec(SolrCore.java:847)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:734)
... 11 more
I also cannot load the codec as postingsFormat="MyCodec" on a field type definition. Then i get a
Caused by: java.lang.IllegalArgumentException: A SPI class of type org.apache.lucene.codecs.PostingsFormat with name 'MyCodec' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: [Lucene40, Lucene41, Pulsing41, SimpleText, Memory, BloomFilter, Direct]
at org.apache.lucene.util.NamedSPILoader.lookup(NamedSPILoader.java:111)
at org.apache.lucene.codecs.PostingsFormat.forName(PostingsFormat.java:100)
at org.apache.solr.core.SchemaCodecFactory$1.getPostingsFormatForField(SchemaCodecFactory.java:55)
at org.apache.lucene.codecs.lucene42.Lucene42Codec$1.getPostingsFormatForField(Lucene42Codec.java:59)
at org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsWriter.addField(PerFieldPostingsFormat.java:102)
at org.apache.lucene.index.FreqProxTermsWriterPerField.flush(FreqProxTermsWriterPerField.java:336)
at org.apache.lucene.index.FreqProxTermsWriter.flush(FreqProxTermsWriter.java:85)
at org.apache.lucene.index.TermsHash.flush(TermsHash.java:116)
at org.apache.lucene.index.DocInverter.flush(DocInverter.java:53)
at org.apache.lucene.index.DocFieldProcessor.flush(DocFieldProcessor.java:81)
at org.apache.lucene.index.DocumentsWriterPerThread.flush(DocumentsWriterPerThread.java:493)
at org.apache.lucene.index.DocumentsWriter.doFlush(DocumentsWriter.java:422)
at org.apache.lucene.index.DocumentsWriter.flushAllThreads(DocumentsWriter.java:559)
at org.apache.lucene.index.IndexWriter.getReader(IndexWriter.java:365)
at org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:257)
at org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:250)
at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1370)
... 38 more
I am clearly missing something here. I have triple checked the FQCN's i configure in the configuration, or in the services/org.apache.lucene.codecs.Codec file. What am i doing wrong?
Many thanks,
Markus